skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Materials development and evaluation for the ceramic helical expander

Abstract

The supporting role of the materials program for the ceramic helical expander program is described. The materials problems for this rotory expander in an extremely severe environment-a direct coal-fired Brayton topping cycle is defined. Readily available materials and methods for possible solution to these material problems as well as initiating some longer-range studies to improve reliability were evaluated. A preliminary screening of materials in hot coal-fired environments to select candidate materials and coating was made. More detailed evaluations of these candidate materials-reaction-bonded silicon nitride (RBSN) and Si--Al--O--N (Sialon) system- and coatings-chemical-vapor-deposited silicon nitride (CVD-Si/sub 3/N/sub 4/) and CVD-Sialon need to be performed. Termination of the helical expander program abruptly stopped the materials program during this evaluation.

Authors:
;
Publication Date:
Research Org.:
California Univ., Livermore (USA). Lawrence Livermore Lab.
OSTI Identifier:
6161056
Report Number(s):
UCID-17899
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; FOSSIL-FUEL POWER PLANTS; TOPPING CYCLES; GAS TURBINES; MATERIALS; ALUMINIUM ALLOYS; BRAYTON CYCLE POWER SYSTEMS; CERAMICS; EVALUATION; EXPERIMENTAL DATA; NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; RELIABILITY; SILICON ALLOYS; SILICON NITRIDES; TABLES; ALLOYS; DATA; DATA FORMS; INFORMATION; NITRIDES; NUMERICAL DATA; PNICTIDES; POWER PLANTS; SILICON COMPOUNDS; THERMAL POWER PLANTS; TURBINES; TURBOMACHINERY; 200102* - Fossil-Fueled Power Plants- Power Cycles

Citation Formats

Landingham, R.L., and Taylor, R.W. Materials development and evaluation for the ceramic helical expander. United States: N. p., 1979. Web.
Landingham, R.L., & Taylor, R.W. Materials development and evaluation for the ceramic helical expander. United States.
Landingham, R.L., and Taylor, R.W. Thu . "Materials development and evaluation for the ceramic helical expander". United States.
@article{osti_6161056,
title = {Materials development and evaluation for the ceramic helical expander},
author = {Landingham, R.L. and Taylor, R.W.},
abstractNote = {The supporting role of the materials program for the ceramic helical expander program is described. The materials problems for this rotory expander in an extremely severe environment-a direct coal-fired Brayton topping cycle is defined. Readily available materials and methods for possible solution to these material problems as well as initiating some longer-range studies to improve reliability were evaluated. A preliminary screening of materials in hot coal-fired environments to select candidate materials and coating was made. More detailed evaluations of these candidate materials-reaction-bonded silicon nitride (RBSN) and Si--Al--O--N (Sialon) system- and coatings-chemical-vapor-deposited silicon nitride (CVD-Si/sub 3/N/sub 4/) and CVD-Sialon need to be performed. Termination of the helical expander program abruptly stopped the materials program during this evaluation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {2}
}

Technical Report:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that may hold this item. Keep in mind that many technical reports are not cataloged in WorldCat.

Save / Share: